"Teacher, be careful."

Shen Kui has been pondering gunpowder now, and his laboratory is full of saltpeter and sulfur.

I wanted to match a previously recorded number, and it was done quickly.

The two of them came to a vacant land with no one in the middle of nowhere.

The first time he tried this ratio test, Shen Kui almost died.

He tried a few more times later, and it was all thrilling.

The ratio of saltpeter and sulfur has been adjusted slightly, but the power has also decreased a little.

Zhao Hui watched Shen Kui ignite the fuse, and then immediately hugged his head and dodged to the side. Hide behind a rock.

Zhao Hui was indeed standing in the front, most of his body was hidden behind the stone, only one head was exposed, and the distance was relatively high, more than ten zhang away from the gunpowder lit by Shen Kui.

Rumble!

Like a thunderclap.

However, in Zhao Hui's ears, this thunder was still far less than a bomb exploding in his ears.

At best, loud firecrackers.

However, in this quiet Taihang Mountain, this sudden explosion still startled countless birds and beasts.

Even though these birds and beasts have heard it dozens of times in the past six months, they are still panicked.

One by one, large birds flew up from the forest and circled in the air, trying to find out what was making such a loud noise.

The beasts on the ground also ran outside for the first time.

Such a terrifying voice, even if they have heard it countless times, they are still afraid, even if it is the king of the mountains and forests, they are just as afraid.

"Teacher, are you alright?"

Shen Kui peeked out from behind the stone.

In the previous experiments, he always lit the fuse and ran into the distance.

Originally, the explosion was not powerful, and he had enough time to run to safety.

But there were a few times when it was too powerful and hurt him.

Later, he learned to be obedient, lit the fuse and turned around, and hid behind the boulder.

"I'm fine."

Zhao Hui also walked over from behind the stone more than a dozen zhang away.

Unlike Shen Kui, who hid behind a stone and didn't dare to show his head, Zhao Hui saw the scene of the gunpowder explosion with his own eyes.

The sound is quite loud, and if thrown on the city wall, it can scare a group of enemies.

But the lethality is still too low.

That is, people who are very close, and who are unlucky, happen to be scraped by debris.

However, Zhao Hui estimated that this power was also due to the small amount.

If Shen Kui doubles the amount of medicine, the power will be even greater, enough to be used on the battlefield.

The most important thing now is to solve the security problem.

No one dared to use gunpowder like this, and they killed themselves before they could hit the enemy.

"Let's go back."

Zhao Hui approached and looked at the ground where the explosion had occurred, and then prepared to go back.

The two returned to the laboratory, and Shen Kui asked, "Teacher, but what needs to be improved?" ”

"In terms of power, it should be enough for now, and tomorrow we will increase the amount of the test once." Zhao Hui said.

"Also, make this lead a little longer, and tomorrow's proportion of gunpowder will be put into a clay pot and completely sealed, leaving only one lead outside."

"Okay, I'll go get ready."

The gunpowder that Shen Kui made today, although it was also contained in a clay pot, was not completely sealed.

The power of the explosion under the seal is completely incomparable without the seal.

Tomorrow, increase the weight, Zhao Hui seems to have seen the power of the explosion.

Tomorrow will be the shocking sound.

Some of the birds in the trees may be stunned and fall from the trees.

In the evening, Zhao Hui returned to Heifeng Village and stayed with Zhang Xue and Zhao Hong.

His house in Heifeng Village is still there, and someone comes to clean it every day.

Although there are a lot fewer people in Heifeng Village now, the school in Heifeng Village has not been removed.

Although there are only a few dozen children attending classes here today.

But the teachers here are definitely the best.

It's Shen Kui and them, and occasionally they will come to Heifeng Village to do some interesting experiments for children.

Although there are few students here, they can learn more knowledge than those students in Youzhou, Jizhou.

"What makes you so happy?"

Zhang Xue saw Zhao Hui coming back, and she was always happy, which was a little strange.

Usually, even if Zhao Hui teased his son, he was not so happy.

Zhao Hui said: "The gunpowder can almost meet the requirements." ”

The problems we see today are actually not very difficult to solve.

If you are worried that you will kill your own people before you hit the enemy, you just need to make the lead a little longer.

The clay pots are completely sealed and closely guarded, and it is forbidden to carry torches around, so you don't have to worry about them exploding.

Few people know about the development of gunpowder, but Zhao Hui and Zhang Xue have already mentioned it.

"That's what you said, something that makes a loud noise?" Zhang Xuedao.

"Yes." Zhao Hui was in a good mood.

As soon as the gunpowder came out, even if Cao Cao and Liu Bei were heroes, even if they had millions of elite soldiers in their hands, they would be difficult to defeat the gunpowder.

Even if it was these veterans in Zhao Hui's hands, if they encountered a gunpowder explosion, they would collapse instantly.

And with gunpowder, even on the tall city walls, Zhao Hui would attack effortlessly.

As long as a clay pot filled with gunpowder is smashed onto the city wall with a trebuchet, what army would dare to defend the city wall?

He doesn't have to worry about it at all now, he will give Liu Bei Cao Cao time to develop.

With gunpowder, next year in the promotion of chemical fertilizer, his strength will usher in another leap forward.

Zhao Hui teased his son while talking to Zhang Xue.

He was lying on the bed, and he could see the starry sky with his head tilted sideways.

It's a very pleasant day.

Even if Zhao Hui handed over a lot of things to the people below, he didn't have many such comfortable days.

In Youzhou, in Jizhou, even if they don't ask about anything, there will still be a lot of things to report to him every day.

Some don't need him to decide, just let him look at it, some need him to make a decision, and then the next person will continue.

The son fell asleep on Zhao Hui's body.

Zhao Hui and Zhang Xue whispered for a while, and the two also fell asleep together.

The next day, Zhao Hui ate five eggs and 10,000 noodles.

Then after Zhao Hong and Zhang Xue also eat, they took the mother and son to the Yellow Turban Village together.

When she went to bed yesterday, Zhang Xue said that she wanted to see the power of the gunpowder explosion together.

Coming to the Yellow Turban Village, Shen Kui was already preparing.

Zhao Hui hugged Zhao Hong and walked around more than a dozen laboratories in the Yellow Turban Village, which also opened his son's eyes.

Although he couldn't understand anything.

There are a few people who also deliberately took their small inventions to play with Zhao Hong.

As the son of Zhao Hui, he is favored by everyone here.

Zhao Hong doesn't cry or make trouble, which makes people like it very much.

But these Zhao Hui students are also very difficult to make Zhao Hong laugh.

After playing around for a while, no one succeeded in making Zhao Hong laugh.